Home / 5,428.27-7,488.19-3,435.40

Finding the Fourth Proportional to 5,428.27, 7,488.19 and 3,435.40

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Solution

The fourth proportional to 5,428.27, 7,488.19 and 3,435.40 is: 4,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.27 : 7,488.19 = 3,435.40 : x
  2. Step 2: Convert to fraction form
    5,428.27/7,488.19 = 3,435.40/x
  3. Step 3: Cross multiply
    5,428.27x = 7,488.19 × 3,435.40
  4. Step 4: Simplify right side
    5,428.27x = 25,724,927.93
  5. Step 5: Solve for x
    x = 25,724,927.93/5,428.27
  6. Step 6: Final answer
    x = 4,739.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.